Funny you could question what you didn't read. 
So
was Moses allowed to kill an eygptian? allowed by whom? by the
eygptian law? or God's law? If he were not allowed by God's law,
than it was God who should punish him. If he were not allowed by
the Eygptian law, then he should have gone under the eygptian
court, but he as a prince of eygpt, could have immunity against
such law. In the end, why did he run away? His own conscience
accused him.
May be the answer is, do you allow yourself to kill somebody? for
self defence, for your country, your family, for God? the list goes
on.....there is a lot to think, or just let your instinct decides
at that point in time? 
